Chemically stable proton conducting doped BaCeO3 - No more fear to SOFC wastes

Ramaiyan Kannan; Kalpana Singh; Sukhdeep Gill; Tobias Fürstenhaupt; Venkataraman Thangadurai

doi:10.1038/srep02138

Chemically stable proton conducting doped BaCeO₃ - No more fear to SOFC wastes

Ramaiyan Kannan, Kalpana Singh, Sukhdeep Gill, Tobias Fürstenhaupt, Venkataraman Thangadurai^*

^*Corresponding author for this work

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Development of chemically stable proton conductors for solid oxide fuel cells (SOFCs) will solve several issues, including cost associated with expensive inter-connectors, and long-term durability. Best known Y-doped BaCeO₃ (YBC) proton conductors-based SOFCs suffer from chemical stability under SOFC by-products including CO₂ and H₂O. Here, for the first time, we report novel perovskite-type Ba _0.5Sr_0.5Ce_0.6Zr_0.2Gd _0.1Y_0.1O_3-δ by substituting Sr for Ba and co-substituting Gd + Zr for Ce in YBC that showed excellent chemical stability under SOFC by-products (e.g., CO₂ and H₂O) and retained a high proton conductivity, key properties which were lacking since the discovery of YBCs. In situ and ex- situ powder X-ray diffraction and thermo-gravimetric analysis demonstrate superior structural stability of investigated perovskite under SOFC by-products. The electrical measurements reveal pure proton conductivity, as confirmed by an open circuit potential of 1.15 V for H ₂-air cell at 700°C, and merits as electrolyte for H-SOFCs.

Original language	English
Article number	2138
Journal	Scientific Reports
Volume	3
DOIs	https://doi.org/10.1038/srep02138
Publication status	Published - 2013

Access to Document

10.1038/srep02138

Cite this

@article{58b40f2348b24bd78ae4d351613527f4,

title = "Chemically stable proton conducting doped BaCeO3 - No more fear to SOFC wastes",

abstract = "Development of chemically stable proton conductors for solid oxide fuel cells (SOFCs) will solve several issues, including cost associated with expensive inter-connectors, and long-term durability. Best known Y-doped BaCeO3 (YBC) proton conductors-based SOFCs suffer from chemical stability under SOFC by-products including CO2 and H2O. Here, for the first time, we report novel perovskite-type Ba 0.5Sr0.5Ce0.6Zr0.2Gd 0.1Y0.1O3-δ by substituting Sr for Ba and co-substituting Gd + Zr for Ce in YBC that showed excellent chemical stability under SOFC by-products (e.g., CO2 and H2O) and retained a high proton conductivity, key properties which were lacking since the discovery of YBCs. In situ and ex- situ powder X-ray diffraction and thermo-gravimetric analysis demonstrate superior structural stability of investigated perovskite under SOFC by-products. The electrical measurements reveal pure proton conductivity, as confirmed by an open circuit potential of 1.15 V for H 2-air cell at 700°C, and merits as electrolyte for H-SOFCs.",

author = "Ramaiyan Kannan and Kalpana Singh and Sukhdeep Gill and Tobias F{\"u}rstenhaupt and Venkataraman Thangadurai",

year = "2013",

doi = "10.1038/srep02138",

language = "English",

volume = "3",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature publishing group",

}

TY - JOUR

T1 - Chemically stable proton conducting doped BaCeO3 - No more fear to SOFC wastes

AU - Kannan, Ramaiyan

AU - Singh, Kalpana

AU - Gill, Sukhdeep

AU - Fürstenhaupt, Tobias

AU - Thangadurai, Venkataraman

PY - 2013

Y1 - 2013

N2 - Development of chemically stable proton conductors for solid oxide fuel cells (SOFCs) will solve several issues, including cost associated with expensive inter-connectors, and long-term durability. Best known Y-doped BaCeO3 (YBC) proton conductors-based SOFCs suffer from chemical stability under SOFC by-products including CO2 and H2O. Here, for the first time, we report novel perovskite-type Ba 0.5Sr0.5Ce0.6Zr0.2Gd 0.1Y0.1O3-δ by substituting Sr for Ba and co-substituting Gd + Zr for Ce in YBC that showed excellent chemical stability under SOFC by-products (e.g., CO2 and H2O) and retained a high proton conductivity, key properties which were lacking since the discovery of YBCs. In situ and ex- situ powder X-ray diffraction and thermo-gravimetric analysis demonstrate superior structural stability of investigated perovskite under SOFC by-products. The electrical measurements reveal pure proton conductivity, as confirmed by an open circuit potential of 1.15 V for H 2-air cell at 700°C, and merits as electrolyte for H-SOFCs.

AB - Development of chemically stable proton conductors for solid oxide fuel cells (SOFCs) will solve several issues, including cost associated with expensive inter-connectors, and long-term durability. Best known Y-doped BaCeO3 (YBC) proton conductors-based SOFCs suffer from chemical stability under SOFC by-products including CO2 and H2O. Here, for the first time, we report novel perovskite-type Ba 0.5Sr0.5Ce0.6Zr0.2Gd 0.1Y0.1O3-δ by substituting Sr for Ba and co-substituting Gd + Zr for Ce in YBC that showed excellent chemical stability under SOFC by-products (e.g., CO2 and H2O) and retained a high proton conductivity, key properties which were lacking since the discovery of YBCs. In situ and ex- situ powder X-ray diffraction and thermo-gravimetric analysis demonstrate superior structural stability of investigated perovskite under SOFC by-products. The electrical measurements reveal pure proton conductivity, as confirmed by an open circuit potential of 1.15 V for H 2-air cell at 700°C, and merits as electrolyte for H-SOFCs.

U2 - 10.1038/srep02138

DO - 10.1038/srep02138

M3 - Article

AN - SCOPUS:84881335912

SN - 2045-2322

VL - 3

JO - Scientific Reports

JF - Scientific Reports

M1 - 2138

ER -

Chemically stable proton conducting doped BaCeO3 - No more fear to SOFC wastes

Abstract

Access to Document

Fingerprint

Cite this

Chemically stable proton conducting doped BaCeO₃ - No more fear to SOFC wastes